Why do earthworms come to the surface when theres a heavy rain?
“Earthworms can survive for several weeks under water providing there is sufficient oxygen in the water to support them. They surface as a response to high relative humidity after rain They can move around safely without dehydrating. One theory is that surfacing before and during heavy rains is an evolutionary behavioral adaptation enabling them to be dispersed.” http://res2.agr.ca/london/faq/earth-terre_e.htm Q.
